/* YouTube Channel Library Frontend Styles */

:root {
    --ycl-primary: #0066cc;
    --ycl-primary-hover: #0052a3;
    --ycl-bg-primary: #fafafa;
    --ycl-surface: #ffffff;
    --ycl-text: #1a1a1a;
    --ycl-text-secondary: #666666;
    --ycl-border: #e0e0e0;
    --ycl-radius: 8px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --ycl-bg-primary: #121212;
        --ycl-surface: #1e1e1e;
        --ycl-text: #e8e8e8;
        --ycl-text-secondary: #a0a0a0;
        --ycl-border: #333333;
    }
}

/* Main wrapper */
.ycl-frontend-wrapper {
    background: var(--ycl-bg-primary);
    color: var(--ycl-text);
    padding: 20px 0;
}

.ycl-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Empty state */
.ycl-empty-state {
    background: var(--ycl-surface);
    border: 1px solid var(--ycl-border);
    border-radius: var(--ycl-radius);
    padding: 48px 20px;
    text-align: center;
    color: var(--ycl-text-secondary);
}

/* Categories */
.ycl-categories {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.ycl-category-section {
    margin-bottom: 32px;
}

.ycl-category-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 16px;
    background: var(--ycl-surface);
    border: 1px solid var(--ycl-border);
    border-radius: var(--ycl-radius);
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--ycl-text);
    transition: all 0.2s ease;
    user-select: none;
}

.ycl-category-toggle:hover {
    background: var(--ycl-bg-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.ycl-toggle-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    transition: transform 0.2s ease;
    font-size: 14px;
}

.ycl-category-toggle[data-expanded="false"] .ycl-toggle-icon {
    transform: rotate(-90deg);
}

.ycl-category-name {
    flex: 1;
    border-bottom: 2px solid var(--ycl-primary);
    padding-bottom: 4px;
    display: inline-block;
}

.ycl-channel-count {
    font-size: 12px;
    color: var(--ycl-text-secondary);
    margin-left: auto;
    font-weight: 400;
}

/* Category content */
.ycl-category-content {
    display: none;
    padding-top: 16px;
}

.ycl-category-content.open {
    display: block;
}

/* Channels */
.ycl-channel {
    background: var(--ycl-surface);
    border: 1px solid var(--ycl-border);
    border-radius: var(--ycl-radius);
    padding: 16px;
    margin-bottom: 16px;
    transition: all 0.2s ease;
}

.ycl-channel:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.ycl-channel-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--ycl-border);
}

.ycl-channel-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--ycl-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 700;
    flex-shrink: 0;
    font-size: 18px;
}

.ycl-channel-info {
    flex: 1;
}

.ycl-channel-info h3 {
    margin: 0;
    font-size: 16px;
    color: var(--ycl-text);
}

.ycl-channel-link {
    color: var(--ycl-primary);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.2s ease;
}

.ycl-channel-link:hover {
    color: var(--ycl-primary-hover);
}

/* Videos grid */
.ycl-videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.ycl-video-card {
    background: var(--ycl-bg-primary);
    border: 1px solid var(--ycl-border);
    border-radius: var(--ycl-radius);
    overflow: hidden;
    transition: all 0.2s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

.ycl-video-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.ycl-video-thumbnail {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #333333;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.ycl-video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.2s ease;
}

.ycl-video-card:hover .ycl-video-thumbnail img {
    transform: scale(1.05);
}

.ycl-video-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.ycl-video-card:hover .ycl-video-play-icon {
    opacity: 1;
}

.ycl-video-play-icon::after {
    content: '▶';
    color: #ffffff;
    font-size: 20px;
    margin-left: 4px;
}

/* Video info */
.ycl-video-info {
    padding: 12px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.ycl-video-title {
    font-size: 14px;
    font-weight: 500;
    margin: 0 0 8px 0;
    line-height: 1.4;
    color: var(--ycl-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ycl-video-meta {
    display: flex;
    font-size: 12px;
    color: var(--ycl-text-secondary);
    margin-top: auto;
}

.ycl-video-date {
    font-size: 12px;
}

/* No videos state */
.ycl-no-videos {
    grid-column: 1 / -1;
    padding: 32px 16px;
    text-align: center;
    color: var(--ycl-text-secondary);
    background: var(--ycl-bg-primary);
    border: 1px solid var(--ycl-border);
    border-radius: var(--ycl-radius);
}

/* Responsive */
@media (max-width: 768px) {
    .ycl-channel-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .ycl-channel-icon {
        align-self: flex-start;
    }

    .ycl-videos-grid {
        grid-template-columns: 1fr;
    }

    .ycl-category-toggle {
        padding: 12px;
        font-size: 16px;
    }
}

/* Dark mode adjustments */
@media (prefers-color-scheme: dark) {
    .ycl-video-thumbnail {
        background: #222222;
    }
}

/* Accessibility */
.ycl-category-toggle:focus-visible {
    outline: 2px solid var(--ycl-primary);
    outline-offset: 2px;
}

.ycl-video-card:focus-visible {
    outline: 2px solid var(--ycl-primary);
    outline-offset: 2px;
}

.ycl-channel-link:focus-visible {
    outline: 2px solid var(--ycl-primary);
    outline-offset: 2px;
}